Flexible bag



FIG. 1 is a front perspective view of the flexible bag showing our new design;

FIG. 2 is a back perspective view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a back elevational view thereof;

FIG. 5 is a first side elevational view thereof;

FIG. 6 is a second side elevational view thereof;

FIG. 7 is a top plan view thereof; and,

FIG. 8 is a bottom plan view thereof.

The dashed lines show the ornamental design in its environment and form no part of the claimed design. 

CLAIM The ornamental design for a flexible bag, as shown and described. 